Singer-actress Beyonce, star of the movie musical Dreamgirls, was named this year’s “most desirable woman” in an annual reader survey released by the popular lifestyles website AskMen.com.

The entertainer, sometimes credited by her full name, Beyonce Knowles, jumped from No. 50 last year to the top of AskMen’s list of “fantasy girlfriends” in 2007, as ranked by its readers – a majority of whom are men aged 18 to 34.

Beyonce, who burst on the recording scene as a member of the chart-topping R&B group Destiny’s Child, earned a Golden Globe nomination for her role as the Diana Ross-like character in Dreamgirls, a big-screen adaptation of the Broadway hit musical. The movie is nominated for eight Oscars.

Screen star Scarlett Johansson is this year’s AskMen runner-up, followed by the top pick from 2006, Jessica Alba, who slips two places to No. 3.

AskMen.com readers cast a record 8.5 million online votes for the latest edition of an annual poll that debuted in 2001. According to comScore MediaMetrix, which measures website traffic, AskMen has the widest online audience reach among “men’s lifestyle” sites.

Top 15 Most Desirable Women 2007:

1. Beyonce Knowles

2. Scarlett Johansson

3. Jessica Alba

4. Adriana Lima

5. Jessica Biel

6. Alessandra Ambrosio

7. Shakira

8. Maria Menounos

9. Angelina Jolie

10. Elisha Cuthbert

11. Halle Berry

12. Marisa Miller

13. Heidi Klum

14. Gisele Bundchen

15. Rachel McAdams